Using Docker Hub to Build Tekton Pipeline Images for OpenShift Deployment
This tutorial walks through configuring a GitHub project, creating a Dockerfile, setting up Docker Hub builds, and using Tekton Pipelines to deploy container images to an OpenShift cluster, illustrating each step with screenshots and practical tips for resolving image download errors.
Hard work is the mother of success.
The author describes a hands‑on experience with Tekton Pipelines while learning to deploy to OpenShift, encountering an image‑download error and then leveraging Docker Hub's automatic build feature to create the required container image.
1. GitHub Configuration
First, a new GitHub repository is created for the project. The repository structure is shown in the following screenshot:
The project layout includes source files and a Dockerfile as illustrated below:
The Dockerfile itself is displayed in the next image:
2. Docker Hub Configuration
A new Docker Hub project is created to host the automatic builds. The configuration screen is shown here:
After linking the GitHub repository, the build history appears as follows:
Finally, the tags generated by Docker Hub are displayed:
With the image now available in Docker Hub, Tekton Pipelines can pull it and complete the OpenShift deployment without the previous download issue.
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